Paper bag



(No Model.) 2 Sheets-Sheet 2.

` D. APPEL.

PAPER BAG.

No. 340,074. Patented Apr. 20, 1886.

'- UNITED STATES ATENT OFFICE.

DANIEL APPEL, or CLEVELAND, OHIO, ASSIGNOR ro THE UNION PAPER BAG MACHINE COMPANY, OF PHILADELPHIA, PENNSYLVANIA.

PAPER BAG.

SPECIFICATION forming part of Letters Patent No. 340.074, dated Aprl 20. 1886.

Application filed June 13, 1885.

To all whom it may concern:

Be it known that I, DANIEL APPEL, a citizen of the United States, residing at Cleveland, county of Cuyahoga, and State of Ohio,

have iuvented certain new and useful Improvements in Paper Bags, fully described and represented in the following specification and the acconpanying drawings, forming a part ol' the same.

This invention relates to what are known in the art as bellows-sided sq nare-bottom bags, and particularly to the manner of forming the bottons thereof. These bags are most conimonly forned from a continuons fiat tube having inwardly-folded or bellows sides, froni which tube the bag lengths or blanks are severed, after which one end of each blank is properly folded and pasted to form the bagbottom. In some instances, however, these zo bags are forned from plain blanks, which are cut to proper form to provide the bottomforming portion, after which they are folded into tubular form with the inwardly-folded or bellows sides.

The object of the present invention is to form the bottoms of this class of bags in a r simple and effective nanner, and in such a way as to provide them with corner creases and folds, which will cause them, when the bag is opened and distended, to take a rectangular form without previous manipulation by the user.

To this end the invention consists in the novel formaton of the bag-bottom, which will 3 5 be hereinafter fully described.

In the drawings, Figure l represents a side view of a portion of a tubular bag length or blank, Figs. 2 and 3 being respectively cross and central longitudinal sections thereof. Fig.

4 represents the bag-length provided with creased lines, which dete'nine the lines upon which the bottom is folded. Figs. 5 and 6 represent, by a side and edge view, the first operation in folding the bottom, and Figs. 7 and 8,

5 by similar views, the next succeeding operation. Figs. 9, 10, and ll represent, by perspective views and a central longitudinal section, further Operations in the formation of the bottom. Figs. 12 and 13 represent, respectively, a side view and a central section ot' the bag when its bottom is completed. Fig. 14 is Serial No. 163568. (No model.)

a cross-section on the line x of Fig. 12, and Fig. 15 is a perspective View looking at the botton of the bag when it is opened and disteuded.

In the nanufacture of bags of this character the bellows-sided tube is forned of a single pieceof paper or other material by any of the well-known nethods-such, for instance, as that illustrated in Letters Patent No. 138, 144, o dated May 13, 1873-from which tube a blank' or bag-length, A, is severed in the usual manner, so as to provide the end of the blank with a lip, 10, projecting from one side or ply, the other side or ply and the plies composing the 6 bellows folds b being severed evenly on a straight line, or approximately so, across the blank, as seen in Figs. 1, 3, and 4. This blank is then creased upon the lines 1, 2, 3, 4, 5, and 6, as shown in Fig. 4, so as to define the lines 7: upon which the paper is to be folded in the operation of forming the bag-bottom.

In forming the bag-bottom the end 11 of the upper side or ply of the blank A is folded over on the line 5, so as to lie flat upon the body of the blank, as shown in Fig. 5, and as is common in forming the diamond fold in satchel-botton bags. This causes the corner flaps, 7 8, of the upper portions, a, of the bellows sides, which are defined by the creased So lines 1 2, to assume the positions shown in Fig. 5. The blank is then provided in any suitable nanner with suitable lines of paste, as represented by the short oblique lines in Figs. 5 and 7, for uniting the several parts to close the bottom. After the paste has been thus applied, the end 11 will be folded back to its original position, as shown in Figs. 7 and 8, so as to double or fold the corner liaps,

7 8, upon their central line, 9, and thus cause go their edges to be united by the lines of paste thereon. The result of this operation is, that the corner flaps, 7 8, are folded or tucked between the plies of the portions a of the bellows sides. The portions a of the bellows sides are 5 then turned upward on lines coincident with the inward folds b of the bellows, as shown in Figs. 9 and 10. After this the side fiaps, 13

14, of the lower portions, c, of the bellows sides, which are defined by the creased lines [co 1, 2, 3, and 4, and the lip 10, which is defined by the creased lines 3, 4, and 6, will be turned up and the flaps 13 14 folded inward between the portions a c of the bellows sides, as shown in Fig. 9. The portions a are `then folded back to their original position, as shown in Fig. 11, thereby bringing the lip 10 down upon the end of the body, to which it will be caused to adhere by the paste applied thereto, and at the same time doubling the flaps 13 14 upon the, line 12, (see Fig. 9,) and pressing their edges against the portions a c, to which they will adhere by reason of the paste applied thereto. This operation completes the formation of the bag and reduces it to the form shown in Fig. 12.

The bottom of the bag, when thus formed, will, when the bag is opened 'and distended as in'Fig. 15, assume the necessary rectangular form without any extra manipulation by the user.

*The eorner flaps, 7 8, which are folded or tucked inward between the plies of the portions a of the bell ows sides, will, when the bag is distended, lie within the bottom; but as the edges of saidflaps are pasted no leakage will oceur, as will be clearly seen by reference to Fig. 14.

It will be observed that this bag, the same as others of this general class,'may, instead of being formed from a continuous' tube, be formed from a plain blank, the bottom-forming 30 end of which is cut so that when the blank is folded into tubular form it will be provided with the projecting lip 10.

What'I claim is- The berem-described bellows-sided squarebottom bag having the corner fiaps, 7 8, folded inward between the plies of the portions a of the bellows sides, and the lip 10 folded over onto the outside of the portion 11, whereby when the bag is distended the flap 7 8 lie 40 w r within the bottom of the bag, substantally as described.

`In testinony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

DANIEL APPEL.

Witnesses: V j

GEO. H. GRAHAM, T. H.'PALMER. 

